摘要
为减小由直线电机周期波动法向磁场力引起的机械结构振动,对进给系统的工作台和底座分别进行静力学和动力学拓扑优化。综合静力学和动力学的拓扑优化结果,对工作台和床身分别进行重构。对比重构前、后结构静、动力学性能表明:重构后工作台和底座在法向磁场力作用下变形减小,静刚度提高;重构结构的低阶模态固有频率有所提高,承受冲击载荷的能力增强。利用拓扑优化结果对结构重构,可以有效提高结构的静、动刚度,拓扑优化可为系统结构设计提供参考。
In order to reduce vibration of high speed high precision machine tool caused by periodic fluc- tuant normal force of permanent magnet linear synchronous motor （ PMLSM）, table and bed of linear feed system were optimized by using topology optimization techniques. The topology results were used to restructure the table and bed. Comparing with the original design, deformation of table and bed decrease under the normal force, and low order natural frequency increase. The results show that machine＇ s static and dynamic stiffness of restructure are improved significant after restructure. The useful information for the optimal design of precision machine tool is obtained.
出处
《组合机床与自动化加工技术》
北大核心
2012年第12期45-48,52,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
高等学校博士学科点专项科研基金资助项目(20102102110001)
关键词
高速高精数控机床
拓扑优化
永磁直线同步电动机
high speed high precision machine tool
topology optimization
permanent magnet linear synchronous motor
